k24/k20 frank w/ 5 speed - what rpm for vtec?

[Slip_Angle]

I say stick with the PRB.

RBB will be about the same low/mid range (maybe a little more) and restrict the top end. I don't actually have experience with these IMs but this is what I've been told (by Talon). Slip has experience too but I think him and Talon have differing opinions.

From what I understand: PRB = slightly better top end, RBB = slightly better low/mid range. Can't go wrong with either. I'll prob go PRB because I already have one

I have tried both. RBB is hands down the winner. Not just a little more torque low-mid but lots more torque. Top ends are the same.

[Deadphishy]

In my tuning 4600 is to high for my vtec cross over. front end of the car lifts up when it hits...

[02CivicSI-VTEC]

With the Type-S/Stock manifold your giving up lots of torque through-out the power band, especially low to mid range. The top end HP is the same.

DO NOT go with an RBC with a K24 unless it's built up quite a bit. You'll lose more torque and gain only 2-3hp.

The Kal will probably work OK but you'll be rich until the higher RPM's.... Either way, you need to tune it or get it tuned.

I TOTALLY agree with you. i feel like the RBC is hurting the My motor. i am thinking of goin back to STOCK PRB IM.